In this competition, we are focusing on a fundamental causal challenge: participantsare asked to learn the causal alarm graphs in which every node is an alarm typefrom observable historical alarm data together with limited prior knowledge. Thechallenge originates from a real-world root cause analysis (RCA) scenario intelecommunication networks. By addressing this challenge, participants will notonly help operators trouble-shooting efficiently, but also advance the field of causaldiscovery, and contribute to our understanding of complex systems.